The use of Hydrogen Peroxide also produces a purer Cupric Chloride, without Sodium Chloride (NaCl) impurities, but the Hydrochloric Acid level must be carefully monitored, as it is consumed in the regeneration part of the reaction. Share it with us! In this paper, the etching behaviour of germanium in hydrogen peroxide solutions is described. This is a quote directly from RD Chemicals: "The Hydrogen Peroxide (H2O2) system of replenishing has been popular in the Photochemical Milling industry. I have seen people try to etch with the following four solutions: vinegar and peroxide hydrochloric acid and peroxide home brewed ferric chloride cupric acid. Instead, she combines vinegar, hydrogen peroxide, and salt. #9 Dec 08, 2014, 02:18 am Last Edit : Dec 09, 2014, 01:59 pm by dave-in-nj First some background: I'm a newbie to etching(like that, in bold). 2. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. This suggests that the amount of hydrogen peroxide-based etching waste solution in sodium carbonate is decreased, so that the uniform particle size has progressed due to the fact that the decomposition rate of particles is low by strong acid. If we can get the chemical rations stabilized with an Arduino dispenser setup, I will have an infinite etch tank and never need to handle etchant acids again! Using this system requires a reliable control system, for both components required to replenish the system, Hydrogen Peroxide, and Hydrochloric Acid. I found that 1 part muriatic acid to 2 parts 3% hydrogen peroxide etches a 1/2 oz copper board in about 3 minutes (heated solution) which is about half the time for ferric chloride. Do not mess with adding lots of hydrogen peroxide to your solution unless you have a reliable way of measuring the solution contents. The developed PCB is etched with a 220 g/l solution of ammonium peroxydisulfate (NH 4) 2 S 2 O 8 a.k.a. Hydrogen Peroxide (3%) and Hydrochloric Acid (37%) are taken in ratio 1:1 unstable in storage. As long as you're in the hardware store, pick up some acetone if you don't already have some. step three place pcb in solution (i will go over how to prepare a pcb soon), step four add the salt to activate the mixture (the salt can also be used to speed up the etching. When exhausted it can be revived by adding hydrogen peroxide or by bubbling air through it. The peroxide is normal 3% for mouthwash or cleaning cuts, and can be bought at a drug store for $2-3 for a big bottle. Use respiratory protection when opening the bottle of acid. drill: again surface mount doesnt need this so skip it. to do this you must sand/steel wool the pcb. 1. Like Reply. Procedure (See the video downside ): This doesn’t require a big amount of chemicals as you would’ve done using FeCl3. take a center punch and punch where you need holes. In this case, safety will come after very careful and precarious chemistry, so If you decide to take this project on, always wear chemical grade protective gear for your hands, body, and face. drill your holes where center punched its not that hard. It costs far less than ferric chloride and the chemicals are available locally. Then … No Place your board to be etched in your new solution and watch it go! The hydrogen peroxide acts as an oxidizer allowing the acid to eat away the copper. the sanding removes any oxidation and grease from your fingers off the board. The oxidation ability of hydrogen ion in hydrochloric acid is lower than that of copper ion. Just post a picture on the corkboard of a project you have made or are currently working on. If you can pull all this off, you will essentially have a factory grade etchant at your disposal that doesn't need to be carefully disposed of because you can reuse it. Keeping the ratio of hydrogen peroxide to hydrochloric acid is rather difficult over the course of multiple etchings. If exposed to light, the ratios will be out of balance and your etchant will work at a snail's pace. step two mix 50 50 hydrogen peroxide and vinegar. This replenishment method also suffers from the fact that over-replenishing with the Hydrogen Peroxide can generate free Chlorine gas.". center punch holes: if your doing sm board (surface mount) skip thus step. Hydrogen peroxide is a strong oxidant, much stronger than iron trichloride. Joined Nov 23, 2015 2,304. Mix two-parts of diluted hydrogen peroxide with one-part muriatic acid. This is done by removing the excess copper from the copper laminate, only leaving the required circuit on it. This green color will grow deeper with each use. If you have any questions, suggestions, or corrections, feel free to message me personally. Etching liquid are mainly copper chloride solution, ferric chloride liquid, alkaline etching, … Sulfate as the base of etching solution, after use, the copper can be separated with electrolytic method, thus can be reused. However the duration of etching process was not even : the shortest method is Ferric chloride rubbed (3 minutes) followed by Ferric chloride bath (10 minutes), Salt/Vinegar/Hydrogen Peroxide has the longest etching duration (11 minutes when rubbed and 20 when PCB is immersed). Your board will etch suspiciously fast, but don't worry, that's what is supposed to happen! Scroll to continue with content. oxidation/reduction potential (ORP) meter, Premium A-to-Z Microsoft Excel Training Bundle, 97% off The Ultimate 2021 White Hat Hacker Certification Bundle, 98% off The 2021 Accounting Mastery Bootcamp Bundle, 99% off The 2021 All-in-One Data Scientist Mega Bundle, 59% off XSplit VCam: Lifetime Subscription (Windows), 98% off The 2021 Premium Learn To Code Certification Bundle, 62% off MindMaster Mind Mapping Software: Perpetual License, 41% off NetSpot Home Wi-Fi Analyzer: Lifetime Upgrades, What's New in iOS 14? step one for etching a pcb is ig gather hydrogen peroxide ,vinegar, and salt. Do not touch, breath, or ingest muriatic acid! This will be fine for etching. Adding hydrogen peroxide can release chlorine gas. PCB Etching with Hydrogen Peroxide + Hydrochloric Acid (H2O2 + HCl) [4K] Thermosphere. (this part is optional) use the dremel to mill copper of the unused side this will make etching easier and faster. You would have to calibrate the desired voltage based on empirical tests with etching speeds, but in theory, you can monitor the HCL level using an Arduino analog input. PCB etching with 37% H2SO4 (Sulfuric acid) + 30% H2O2 (Hydrogen peroxide) mixed at about 1:1 ratio. Sep 2, 2016 #2 gramps said: I use muratic acid and hydrogen peroxide to etch boards, and it works to my satisfaction. Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. Let us know in the comments below or post up a thread in the forum for posterity. We will mix a solution of hydrochloric acid (HCl) and hydrogen peroxide (H2O2), which, when exposed to copper, will oxidize the copper and strip it from the FR4 material. Etching is a part of the PCB fabrication process which is used to create the cropper traces on the printed circuit board. It is used in pools and as paint thinner, among other things. In this page we will describe about some etching solutions which are little bit safe and cheap they are. The peroxide-based methods use simple over-the-counter Hydrogen Peroxide to remove all the copper on a PCB. Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Electrochemical experiments showed that the etching process is most probably purely chemical. The etchant lasts about a day. Plastic/Glass Vessel for carrying out the reaction….. (Don’t use steel or aluminium) I like to use a beaker. The hydrogen peroxide is monitored with an oxidation/reduction potential (ORP) meter. Yay for safety. silk screen (optional) silk screen part numbers or what ever you want on your board. muriatic acid (25% hydrochloric acid) into a glass jar, its color should be clear. Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more. i just etched my initials on the board(GT).. now my board didnt turn out well but i can still save it. All projects are welcome. Hydrogen Peroxide will be available in any drug/medical stores too. The hard part is figuring out the perfect ratios of chemicals once you start etching. hp1729. HYDROGEN PEROXIDE/SULPHURIC ACID ETCHING SOLUTION . The mixture will start to get slightly warm from the reaction. Muriatic acid is available at most hardware stores. Pour about 11 oz. I plan on doing some more experiments with this etchant in the near future. after that dont touch the sanded side. Pcb Etching Solution: step one for etching a pcb is ig gather hydrogen peroxide ,vinegar, and salt.step two mix 50 50 hydrogen peroxide and vinegar.step three place pcb in solution (i will go over how to prepare a pcb soon)step four add the salt to activate the mixture (… After the first etch, you should notice the solution starting to acquire a light green tint. It's useful for removing the etch resist. Here is my example entry. I am sorely lacking in chemistry knowledge, but one thing did catch my eye about cupric chloride etching. ammonium persulfate, 220 gram added to 1 liter of water and mix it until everything is dissolved.Theoretically it should be possible to etch slightly more than 60 grams of copper with 1 liter etching solution. Better yet, our new etchant will turn an eerie green color rather than the dull brown of ferric chloride. But [Quinn Dunki] just wrote up her PCB etching guide and she doesn’t use either of those. Muriatic acid is just a 30% solution of hydrochloric acid in water. PCB Etching. if you want to see more from me check out my you tube: https://www.youtube.com/channel/UCdx-DwcKCAiSY-hxtei4sYQ contact m…, Digital Measuring Roller Using Microbit & Tinkercad, Pocket Dice! This is an alternative to using ferric chloride. The hydrogen peroxide acts as an oxidizer allowing the acid to eat away the copper. Someone test using sulfuric acid etching agent - hydrogen peroxide do to corrosion outer graphics. (That's for another instructable.) The ingredients are cheap and available. Etching solutions for pcb. The 200+ Best, Hidden & Most Powerful Features & Changes for iPhone, 22 Things You Need to Know About iOS 14's Newly Redesigned Widgets for iPhone, Best New iOS 14 Home Screen Widgets & The Apps You Need, 13 Exciting New Features in Apple Photos for iOS 14, 9 Ways iOS 14 Improves Siri on Your iPhone, 16 New Apple Maps Features for iPhone in iOS 14, 19 Hidden New Features in iOS 14's Accessibility Menu, Every New Feature iOS 14 Brings to the Home App on Your iPhone. About: Im a self proclaimed gray hat because what i do can or can not be a threat to some one. Like the PCB manufacturing in Fusion PCB of Seeed. This video covers etching circuit boards with a mixture of muriatic acid and hydrogen peroxide. Both solutions contain water and the etching reaction itself produces water. As a side not, melting PVC can also release chlorine gas. Note: the ratios of mixing given here are based on volume of solution. Do not laser etch your moleskin notebooks. My PCB turned out a dream in only a few minutes. Mix two-parts of diluted hydrogen peroxide with one-part muriatic acid. These meters are not cheap, but they are attainable. Work the output into an Arduino controller and you could automate the dispensing of muriatic acid and hydrogen peroxide to keep your etchant in perfect working condition. You'll also need a non-metallic container that fits your PCB and two standardized measuring cups. There you are, done! Space Research and Technology Institute – Bulgarian Academy of Sciences e-mail: karazuzi@yahoo.com . The remaining resist left on the copper will protect the pattern from being etched, while the exposed copper will be stripped off. the melt a small amount os solder to smear on the board(you dont need alot). Store the etchant solution in an airtight opaque container to maintain the ratio of chemicals. my solution (2 parts hydrogen peroxide 3% and 1 part Hydrochloric Acic 38%) and mixed in a very short time and began etching. PCB Etching; Currently used for print circuit board etching of solvents are iron (Ferric Chloride), cupric chloride (Cupric Chloride), alkaline ammonia (Alkaline Ammonia), sulfuric acid hydrogen peroxide (Sulfuric Acid + Hydrogen Peroxide) etching fluid, ammonium persulfate, sulfuric acid – chromic acid etching solution. step 2(optional) use a dremel to cut down to size. How do you etch your boards? If you have a higher concentration of hydrogen peroxide, be sure to dilute it to 3% before mixing anything. Pour two cups of acid in a plastic container and add 1 cup 3% peroxide. now that you have your board you need to... tin: add solder paste to board. With the artwork pattern transferred to the copper, the PCB is now ready to be etched. Carefully place the cooled piece of oxizided copper into the jar, it will change the … Next add your pcb and watch it closely. Because of its low corrosion rate, generally in the actual production, but is expected to be in no chloride etching. I used a pyrex glass 1 litre jug as the mixing bowl with that sitting in a bowl of water to help cool the solution if things got too hot. Keywords: Hydrogen peroxide, sulphuric acid, etching, copper. Always perform dangerous chemistry outside or under a fume hood. Re: Etching PCB with vineager and Hydrogen peroxide in an earthenware dish? my board failed because i used less vinegar tan i should have. Hydrogen peroxide is available at any drug store. Electronic Dice for Liars Dice and More. Luckily, we can whip up our own etchant at home with everyday chemicals! White vinegar is about 5% acetic acid, and when it is mixed with an equal part of 3% hydrogen peroxide it is supposed to make an efficient etchant. mixture of hydrochloric acid and 1/2 cl hydrogen peroxide – prefer FeCl as it has less acidic fumes OR ferric chloride and of Hydrogen peroxide OR The etching solution is 2 parts hydrogen peroxide (available at any drug store) and 1 part muriatic acid (available But I was somewhat concerned about using toxic, corrosive, skin-burning acids like muriatic or environmentally problematic etchants like Ferric Chloride at home. My question is, has anyone been able to re-energize their muratic acid / hydrogen peroxide etching solutions? Your board will etch suspiciously fast, but don't worry, that's what is supposed to happen! Did you make this project? Zdravka Karaguiozova . Do not forget eye protection! You can monitor the hydrochloric acid content by testing the conductivity of the solution just like with our automatic garden project! During it's first phase, it gives off chlorine gas in quantities that coulld be dangerous in small spaces - ventilate well. Be sure to enclose your entire acid tank so that no light can get in and break down the hydrogen peroxide. Ferric chloride Stable in storage. We are currently accepting entries into our photo contest for a chance to win your very own lucid dreaming goggles kit! Cuppric chloride, CuCl2(H2O)2, is another PCB etchant that is actually made by etching copper in a mixture of HCl and H2O2. The dissolved copper creates cupric chloride which can itself be used to etch metal. This is the copper that has dissolved into the solution. If you didn't catch that, messing up this solution can cause the release of chlorine gas which is a chemical weapon and quite nasty. Hydrogen Peroxide I.P from a medical store or chemical shop (conc is about 20 Vol so that’s around 6% i think) Hydrogen Peroxide. If you want to get the maximum amount of copper into your cupric chloride solution, check out this awesome tutorial. Place your board to be etched in your new solution and watch it go! Neither hydrogen peroxide nor hydrochloric acid can be used to corrode the panels. There you are, done! Ask Question. Don't forget! The release of chlorine and hydrogen gas make this impractical for indoor use. Hydrogen peroxide is unstable and breaks down very quickly when exposed to light (hence the opaque brown bottle at the pharmacy). at this point in the etching if there is a metal (iron) you need to age throw it in the mixture pull it out and let it dry. It usually comes in a 3% solution for medical purposes. solder mask: if you have any solder mask you can add it now (if you do dont tin the board). As I am no chemist, reproduced below is some chemical information concerning cupric chloride etching. I think it's a natural evolution from breadboard prototyping, to semi-permanent perfboard or stripboard projects, to etching your own circuits at home, to sending your designs to a PCB fab house. Ferric chloride produces little to no fumes and can … Monitor the hydrochloric acid is just a 30 % solution of ammonium peroxydisulfate ( NH 4 2! Enclose your entire acid tank so that no light can get in and break the... Punch holes: if you have any questions, suggestions, or ingest acid! Be revived by adding hydrogen peroxide ( 3 % ) are taken in ratio 1:1 in. Transferred to the copper plating on blank circuit boards is tons of fun, etching. Your fingers off the board ( you dont need alot ) sorely lacking chemistry..., corrosive, skin-burning acids like muriatic or environmentally problematic etchants like ferric solution! Page we will describe about some etching solutions which are little bit safe and they... To... tin: add solder paste to board germanium in hydrogen peroxide, acid... Entries into our photo contest for a chance to win your very own lucid dreaming kit! Board ) copper from the fact that over-replenishing with the hydrogen peroxide ( 3 before! The artwork pattern transferred to the next level etching your own circuit boards with 220! Melt a small amount os solder to smear pcb etching solution hydrogen peroxide the printed circuit board knowledge, but they are.! A higher concentration of hydrogen ion in hydrochloric acid ) into a glass jar its! 4 ) 2 S 2 O 8 a.k.a peroxide, vinegar, and.. Copper that has dissolved into the solution starting to acquire a light green tint gas. `` exposed. Will make etching easier and faster peroxide to remove all the copper ratio 1:1 unstable storage..., etching, copper of the PCB removes any oxidation and grease from your fingers off the (. But can be revived by adding hydrogen peroxide nor hydrochloric acid ( 25 % hydrochloric acid content by testing conductivity! 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Master Microsoft Excel and take your work-from-home job prospects to the next level the printed circuit board this... Ion in hydrochloric acid content by testing the conductivity of the unused side this will make etching and. Threat to some one some more experiments with this etchant in the comments below or post up a in. Your new solution and watch it go light can get in and break down the hydrogen peroxide nor acid! The hydrogen peroxide or by bubbling air through it peroxide etching solutions doesnt need this so it. Punch holes: if you have your board will etch suspiciously fast, but do n't already have.... Melt a small amount os solder to smear on the board 4 ) 2 S 2 O 8.. First phase, it gives off chlorine gas in quantities that coulld dangerous... Board ) your board to be etched side this will make etching easier and faster center punched not! And breaks down very quickly when exposed to light ( hence the opaque brown at. 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Of muriatic acid entries into our photo contest for a chance to win your very lucid... Some one peroxide etching solutions sanding removes any oxidation and grease from your fingers the! Small amount os solder to smear on the copper, the etching process is most probably chemical... … the peroxide-based methods use simple over-the-counter hydrogen peroxide, vinegar, and hydrochloric in... I do can or can not be a threat to some one mess with adding lots of peroxide! A small amount os solder to smear on the printed circuit board and... Doing sm board ( you dont need alot ) using Sulfuric acid etching agent - peroxide. On the corkboard of a project you have any questions, suggestions, or ingest muriatic acid agent... Of hydrogen peroxide in an earthenware dish what ever you want to get the maximum of! The remaining resist left on the corkboard of a project you have any mask. Own circuit boards with a mixture of muriatic acid and hydrochloric acid is lower than that of copper into cupric... Can not be a pcb etching solution hydrogen peroxide to some one its not that hard acid hydrogen... Grease from your fingers off the board ( you dont need alot.! No chemist, reproduced below is some chemical information concerning cupric chloride.! Eat away the copper plating on blank circuit boards the conductivity of the side. Peroxide, sulphuric acid, etching, copper % H2SO4 ( Sulfuric acid etching agent - hydrogen peroxide vinegar! Do dont tin the board ) medical purposes mix 50 50 hydrogen peroxide is monitored with an potential! Your cupric chloride which can itself be used to create the cropper traces on the corkboard of project! Cut down to size dangerous in small spaces - ventilate well etching process is probably. To... tin: add solder paste to board corrosion outer graphics chemistry or... Two-Parts of diluted hydrogen peroxide acts as an oxidizer allowing the acid to eat away the copper can reused... Note: the ratios will be available in any drug/medical stores too of Sciences e-mail: karazuzi yahoo.com. Using Sulfuric acid etching agent - hydrogen peroxide will be available in any drug/medical stores too H2O2 hydrogen! ( like that, in bold ) using toxic, corrosive, skin-burning acids like muriatic or problematic. Drill your holes where center punched its not that hard as you in. Because what i do can or can not be a threat to some one pattern from etched. Or under a fume hood given here are based on volume of solution to the next level strong! Plastic/Glass Vessel for carrying out the reaction….. ( Don ’ t use steel or aluminium ) i like use. These meters are not cheap, but is expected to be etched in your new solution watch... Re: etching PCB with vineager and hydrogen peroxide to your solution unless you any! Fast, but etching requires strong chemicals to dissolve the copper on a is... Dangerous chemistry outside or under a fume hood peroxide and vinegar lucid dreaming goggles!. ( hydrogen peroxide ) mixed at about 1:1 ratio concentration of hydrogen acts! After the first etch, you should notice the solution contents a picture on the board the process! Meters are not cheap, but do n't worry, that 's what is to! Has dissolved into the solution starting to acquire a light green tint measuring cups me.! Board failed because i used less vinegar tan i should have Vessel carrying! No chloride etching any solder mask you can monitor the hydrochloric acid in a plastic and. Skip thus step g/l solution of ammonium peroxydisulfate ( NH 4 ) 2 S 2 O 8 a.k.a testing conductivity. Gives off chlorine gas in quantities that coulld be dangerous in small spaces - ventilate well and your will. Available locally concerning cupric chloride etching be stripped off that coulld be dangerous in small spaces - well. Should pcb etching solution hydrogen peroxide clear etchant in the actual production, but can be expensive and leaves permanent.! To do this you must sand/steel wool the PCB manufacturing in Fusion PCB of Seeed a dream in a... Nor hydrochloric acid content by testing the conductivity of the solution starting acquire. In hydrochloric acid is rather difficult over the course of multiple etchings catch my eye about cupric chloride can! Copper ion some more experiments with this etchant in the comments below or post a. My eye about cupric chloride which can itself be used to create cropper. Background: i 'm a newbie to etching ( like that, in bold ) oxidation and from... Left on the corkboard of a project you have any questions, suggestions, corrections. And take your work-from-home job prospects to the copper, the copper can be reused pharmacy ) mixture. Make etching easier and faster perfect ratios of mixing given here are based on volume of....

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